抗病毒药物阿昔洛韦主要用于治疗
A.各种病毒感染
B.带状疱疹
C.牛痘病毒感染
D.RNA病毒感染
E.结膜炎
参考答案:B
Machines made today are much better than __ of 1950s.
A. that B, those C. the ones D. which
海关实施查验可以彻底查验,也可以抽查。